title: New trichoscopy findings in trichotillomania: flame hairs, V-sign, hook hairs, hair powder, tulip hairs.
abstract: Differential diagnosis of trichotillomania is often difficult in clinical practice. Trichoscopy (hair and scalp dermoscopy) effectively supports differential diagnosis of various hair and scalp diseases. The aim of this study was to assess the usefulness of trichoscopy in diagnosing trichotillomania. The study included 370 patients (44 with trichotillomania, 314 with alopecia areata and 12 with tinea capitis). Statistical analysis revealed that the main and most characteristic trichoscopic findings of trichotillomania are: irregularly broken hairs (44/44; 100% of patients), v-sign (24/44; 57%), flame hairs (11/44; 25%), hair powder (7/44; 16%) and coiled hairs (17/44; 39%). Flame hairs, v-sign, tulip hairs, and hair powder were newly identified in this study. In conclusion, we describe here specific trichoscopy features, which may be applied in quick, non-invasive, in-office differential diagnosis of trichotillomania.
authors.affiliation: Department of Dermatology, CSK MSW, Woloska 137, 02-507 Warsaw, Poland.
authors.forename: Adriana
authors.initials: A
authors.lastname: Rakowska
authors.forename: Monika
authors.initials: M
authors.lastname: Slowinska
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Olszewska
authors.forename: Lidia
authors.initials: L
authors.lastname: Rudnicka
mesh_terms: D000505:Alopecia / Q000473:pathology; D046169:Dermoscopy / Q000379:methods*; D003937:Diagnosis, Differential; D006197:Hair / Q000473:pathology*; D006801:Humans; D011237:Predictive Value of Tests; D014256:Trichotillomania / Q000473:pathology*